$ git clone -n https://gitee.com/opencloudos-stream/fetch-crl.git /var/lib/mock/dist-oc9-epol-build-90299-59006/root/chroot_tmpdir/scmroot/fetch-crl
Cloning into '/var/lib/mock/dist-oc9-epol-build-90299-59006/root/chroot_tmpdir/scmroot/fetch-crl'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/fetch-crl
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a436a26 package init